- Automation & ControlView all 1,920 products
- AC Drives
- PLC & I/O Cards
- Industrial Communications
- Vibration Monitoring
- Automation Accessories
- Controllers & Data Acquisition
- Isolator & Barrier
- CCTV & Security
- Safety Switches & Guard Locking
- Encoders
- HMI Displays
- Industrial Computers
- Motor Soft Starters
- Servo Drives
- Pneumatic Cylinders
- Machine Vision
- Automation Software
- Robotics
Brand
Vaisala
Vaisala is a Finnish maker of environmental and industrial measurement instruments, founded in 1936 by Professor Vilho Väisälä to manufacture the radiosonde he had developed for upper-air weather observation. The company is headquartered in Vantaa, near Helsinki, and listed on Nasdaq Helsinki. Its humidity, dew point, carbon dioxide and weather sensors are used in industry, buildings and meteorology. Seven Star LLC is an independent supplier in Muscat. We list Vaisala transmitters and probes for industrial, HVAC and power users in Oman and the GCC.
Read the full brand profile- 8 products
- 2 categories
Brand profile
About Vaisala
- Founded
- 1936
- Headquarters
- Vantaa, Finland
- Speciality
- Environmental and industrial measurement instruments
- Listed with us
- 8 products in 2 categories
Vaisala is a Finnish maker of environmental and industrial measurement instruments, founded in 1936 by Professor Vilho Väisälä to manufacture the radiosonde he had developed for upper-air weather observation. The company is headquartered in Vantaa, near Helsinki, and listed on Nasdaq Helsinki. Its humidity, dew point, carbon dioxide and weather sensors are used in industry, buildings and meteorology.
Seven Star LLC is an independent supplier in Muscat. We list Vaisala transmitters and probes for industrial, HVAC and power users in Oman and the GCC.
Vaisala company profile
| Founded | 1936, Finland, by Vilho Väisälä |
|---|---|
| First product | The radiosonde for upper-air weather measurement |
| Headquarters | Vantaa, Finland |
| Listing | Nasdaq Helsinki |
| Product families | HUMICAP humidity and temperature transmitters (HMT330, HMP series), DRYCAP dew point transmitters (DMT series), CARBOCAP CO2 probes (GMP series), Indigo transmitters, WXT weather transmitters, MHT moisture in oil, viewLinc monitoring software |
Milestones
- 1936: Vilho Väisälä founds the company to build radiosondes.
- 1973: Vaisala introduces the HUMICAP thin-film humidity sensor.
Vaisala product series
Humidity and temperature instruments include the HMT330 transmitter for demanding industrial conditions, the HMP7 probe for high humidity and the HMP110 compact probe. Dew point instruments include the DMT143 and DMT152 transmitters for compressed air and dry gases and the DMP370 intrinsically safe dew point instrument.
The GMP251 measures carbon dioxide, and the Indigo520 transmitter connects Indigo-compatible probes to analog outputs, relays and Modbus.
Vaisala HUMICAP sensors measure relative humidity, while DRYCAP sensors measure dew point in very dry gases such as compressed air after desiccant dryers. Probes are chosen by temperature, pressure and installation (duct, wall or process), and the HMT330 family offers several probe types for different conditions.
Where Vaisala instruments are used
Compressed air and dryer monitoring, process and drying control, HVAC and cleanrooms, warehouses and data centres, greenhouses, and incubators and life science applications.
Vaisala products we list
Ordering Vaisala instruments: what we need
Send the model and order code, measurement range, probe type and cable length, process connection, output and display options and any hazardous-area need.
Facts checked against Vaisala's own company history (vaisala.com), October 2026.
Vaisala products by category
Request a Quote for Vaisala Products
Looking for Vaisala parts not listed here, or pricing for a project? Send us the part numbers and quantities. Seven Star LLC sources genuine Vaisala products for customers across Oman and the GCC and replies with a formal quotation.
- Genuine OEM products
- Supply across Oman & the GCC
- Formal quotation from our sales team
Free, no-obligation quotation · takes about 1 minute
Other enquiries: [email protected] · WhatsApp
FAQ
Questions about Vaisala
Common questions about Vaisala equipment, part numbers and supply to Oman and the GCC.
01Which probes work with the Vaisala Indigo520?
Vaisala states that all Indigo-compatible probes connect to any Indigo transmitter, and the Indigo520 accepts two of them at the same time. That lets one transmitter handle, for example, a humidity probe and a carbon dioxide probe. Older probes that are fixed to their own transmitter, as on the HMT330, do not plug in.
02How do I read the order code on a Vaisala HMT330?
The code on the label is a model number followed by a long string of characters. Each position stands for one choice: probe type, cable length, display, outputs, supply, filter and so on. Send the complete string. With it we can identify the exact build in the manufacturer's order form and quote the same configuration.
03Should I replace an HMT330 with an Indigo520 and HMP7?
The Indigo520 with an HMP probe is the newer architecture for the same kind of measurement, with a detachable probe. Mounting, wiring and outputs differ, so it is not a drop-in swap. Send the HMT330 order code, and we compare it with the manufacturer's documentation and propose the configuration the manufacturer recommends.
04What certificates does Vaisala issue with its instruments?
Vaisala ships its instruments with a factory certificate that records the reference readings for that serial number, and accredited certificates can be selected as an option in the order code for many models. State the level your quality system requires when asking for a quotation, so the right option is included.
05Is Seven Star LLC a distributor of Vaisala?
No. Seven Star LLC is an independent industrial supplier based in Muscat. We source Vaisala probes and transmitters through commercial channels, check the model or order code against the manufacturer's documentation before ordering, and provide the manufacturer's datasheet and the certificates the manufacturer issues with the order, on request.